Ask the Van Questions by Subcategories

New and Exciting Physics: Relativity

The Weight of Light
Inertial and Gravitational Mass
Is Everything Relative?
Neutrino Energy
Time and GPS Satellites
Light-on-light Gravity
Why is Einstein's Gravity a Non-linear Theory?
Rigid Rods?
Time and Distance in Special Relativity
Gravitational red Shift
Speed in Space
Is There a Gravitational red Shift of Light From a Star?
Relativistic Doppler Effect
Neutron Star- Black Hole Collision
Now on Earth and Mars
Relativistic Time
Relativistic Charge
Speed Standard
Light in Materials
Is Gravity a Force?
Falling Light Near Earth
Mu-mesons
Light Near Black Hole
Observers in Relativity and Quantum Mechanics
Quantum Entanglement and the Relativistic Speed Limit
Some Relativity Questions
Relativity, Quantum, Etc.
Lorentz Transformed Temperature
Why is Newtonian Gravity Inconsistent With Fixed Light Speed
Waves From Black Holes
Black Holes, Gravity, and Photon Mass
Michelson Morley
Who Sees Length Contraction?
Slower Time on the Ocean Floor
How do we Define Communication?
Detecting Free-fall
Gravity and Time
Absolute Rest?
Time Dilation With two Ships
Does Spacetime Create 'stuff'?
Indestructible Chains and Black Holes
Mixing Classical and Relativistic Equations
Does Light Have Mass?
Spaceship Gravity Drive?
Graviton Collisions
Moving Affects Other Things
Time Reversal Near Black Hole?
Lines in Minkowski Space
Time Dilation and Gravity
Relativistic Electric and Magnetic Fields
Rigid Rods and Relativity
Does a Bullet Exiting a gun at Speeds Approaching the Velocity of Light?
Moving Inside a Plane
Does the Earth Stand Still?
Photon's Point of View
Do Gravitational Waves Undergo Scattering?
Meaning of Gravity Wave Observation
Bending Light and Photon Mass
Rigid Rulers and the Speed of Light
Can Gravitational Waves Resonate With Matter Waves?
Neutrinos Faster Than Light?
Motionless Objects
Ehrenfest Paradox
Neutrino Energy-momentum Relation
Energy Flow Near a Mass
Is Gravity Instantaneous?
Photon Inertial Mass
Gravitational Blue Shift
Frame Drag and Orbits
Galilean Relativity
Light in Different Frames
An Observer is Travelling at the Speed of Light
Seeing Planets and Stars Now?
Does our Time Slow Down?
Why is Speed of Light Constant?
Photon Mass and Momentum
Questions About Relativity
Uncertainty Principle and Speed of Light
Light Mass, Momentum, Energy
Lorentz Contraction Paradox?
Length Contraction and Black Holes
How Does Mass Convert to Other Energy?
Why is a Proton Heavier Than Three Quarks?
Observer-dependent Current
Time, Gravity and Light
Deriving E=mc^2 via Units?
Gravity Around Black Holes
Light Rays, Energy and Mass
Light, Mass, and Gravity
General Relativity, Gravity, and Light Speed
Light Speed in Materials or Gravity
Unitarity, Information, and Black Holes
Are Black Holes Hollow Shells?
E = Mc^2 and the Energy of Light
Invariant Relativistic Facts
Why Dark Energy and Dark Matter?
Apparent Relativistic Times
Collision With Light
Is Relativity Based on Light?
Light Between Moving Objects
Mass of the Light
Two Photons at Rest With Respect to Each Other?
Moving a Long Pole Instantly?
Antimatter Explosions
Unstretchable Strings?
Slowing Down (and Speeding Up?) a Beam of Light
Cosmological Questions
Weight of Energy
Length Contraction and Field Patterns
Does a Black Hole Accelerate Light?
Does Energy Cause Gravity?
Equations for Quantum Gravity
Relativistic Mass and Gravity
Is the Universe we Live in the Result of a Super Massive Star Explosion?
Mass of Light?
Deriving Speed of Light?
Time Dilation and Astronomy
Why Believe Relativity?
Relativistic Mass Increase
Radioactive Recoil
Boson Antiparticles
Kinetic Energy Equal to Rest Mass Energy
Twins Again
Higgs Aether?
Video on Magnetism and Relativity
Is There Mass Associated With Information Transfer?
Relativistic Clocks
Speed and Gravitational Deflection
Gravitational Waves From Spin?
Can Entanglement be Used to Synchronize Clocks Outside the Light Cone?
Relativistic vs Rest Mass in Light
Lorentz Frames for Bell Inequality Experiment
Local Rates and Temperature in Twin Paradox
Gravity and the Speed of Light
How Could Michelson-Morley Work?
Delayed Choice Quantum Erasure- Changing the Past?
Local Equivalence of Gravity and Accelerating Frames
Relativity is for Real
Michelson-Morley Experiment
Can you Bend Light With Light?
Relativistic Doppler Effect
Speed of Gravity
Why two Turns for Spin 1/2?
Ideal gas law vs. Higgs?
Why Different Paths in Gravity?
How can Hawking Radiation Escape?
E=mc^2
Interpreting Michelson-Morley
Moving Mechanical Clocks
Gravity and Quantum Mechanics
Fields Bending Spacetime
Doppler Shift Formulas
Entanglement, Quantum Collapse, and Relativity
Seeing Yourself From Behind
Electromagnetic Waves
Adding Many Velocities in Relativity
Does Gravity Cause Acceleration?
Gravitational Precession
Mass of Earth's Magnetic Field
Who Needs Gravitons?
Proper Work
Relativistic Aging
Event Horizon of Black Holes
Spinning Earth Transport?
Seeing the Early Universe
Rotating Sticks Faster Than Light Speed?
Magnetism and Relativity
Transverse Doppler Shift
Relativity and Newton's 3d Law
Minutephysics on Higgs
Seasons and General Relativity
Higgs and Relativity
Using Entanglement to Measure Light's Speed
Constancy of Mass in Gravitational Field
Are There Real Inertial Frames?
Falling Into Black Hole
Doppler Shift
Is Rotation Absolute?
Gravitational Lensing of the Sun
Gravity Wave Doppler Shift?
Relative Speed of Photons
Picturing Curved Space
Is the Room Moving?
Sources of Gravitational Field
Time Dilation and Signal Times
Relativity and the Cosmic Microwave Background
What is the Cosmological Constant?
Gravity From Moving Objects
Matter Into Energy
Absolute Rest?
Relativitistic Invariants
Earth's Acceleration and Gravity
Colliding Particles at Right Angles
E=hf
Relativistic Transformations of Electric and Magnetic Fields
Gravitomagnetism
Relativisitic Falling
Light in an Accelerating Frame
Gravitomagnetic Force
Dilated Time to Reach 0.99c
Twin Paradox: Relativity Isn't Kidding
Space Isotropy in Gravity
Twins in a Finite Universe
How Does Shapiro Delay Work?
Clocks in Relativity
Why Expect a Graviton?
Magnetic Field Mass
Sun's Gravitational Redshift
Inverse Lorentz Transforms
Light's Sonic Boom
Cosmic Inflation and Relativistic Transforms
Constant Speed of Light
Are There Massless Charged Particles?
Is the Higgs Field Like Molasses?
How old is the Cosmic Background Radiation?
Relativity and Newton's Third Law
Speed of Light From Moving Object
Geodesic Paths in Spacetime
Lorentz Contraction and Current
General Relativistic Time Effects
Matter/antimatter Asymmetry
Is Reality Real? Or Relativity?
Higgs and Photons?
Angular Momentum of a Photon
Proving E=mc^2
'Proving' the Constancy of the Speed of Light
Does Time Exist?
Relativity and Weight
Curved Spacetime
Accelerating Light?
Photon Acceleration?
Photon Mass?
Mass From Quantum Effects
Avoiding Singularities
Gravity and Time
Time Dilation in a Mine
2-D Sheet Universes
Relativity Questions
Special vs. General Relativity
Can a Photon Gain Mass?
CERN Neutrinos: Do we Need to Rewrite Einstein?
Faster Than Light Neutrinos?
Relativity on a Train
What is Relativistic Potential Energy?
What Does Gravity do to Clocks?
Big Bang Baloney
Evidence for Relativistic Time Dilation
Inertia of Radiant Energy
Zeno at the Edge of a Black Hole
Mass and Speed
Gravity Without Fields?
What's the Geometry of the Universe?
Mass and Speed
Momentum Kick From Flashlight
Travel to Future?
Black Hole Physics
Doing Chemistry via Time Dilation
Moving Weights
Limits on Light Density
Big Extra Dimensions
Time Dilation
Absolutely Relativistic Baloney
Relativistic Dynamics
Time Dilation, Meaning of Time
Electromagnetic Waves and Relativity
Speed of Light
Time at the Edge of a Black Hole
Limits of General Relativity
Why can Nothing Exceed the Speed of Light?
Postulates of Special Relativity
Energy Conservation in General Relativity
Relative Speeds and Mediums
Gravitational Effects on Light
General Relativity Paradox?
Relativistic Velocity Addition
Intuition on Quantum and Relativity
Photons, Mass, Gravity, Light, Rest Mass, Invariant Mass, Energy, Momentum
Adding Relative Speeds
How Time Dilation Occurs
Distance Seen by Light?
Racing Light
Gravity Bending Light
Why String Theory?
Electric and Magnetic Transforms
Relativity of Time
Gravity and age of Sun
Speed of Gravity and Light?
Curved Space and Acceleration
Adding Velocities, Relativistically
Distances in Different Universes
Photon Energy
Magnetism and Relativity
Momentum and Energy of Photons (and Other Particles)
Spinning Black Holes
Strings and Quantum
Can Solid Matter Travel as Fast as Light?
Is String Theory Consistent With Relativity?
Do Stringy Dimensions Violate Special Relativity?
Non-linear Curvature
Clocks
Simultaneity
Time and Purpose
Time Dimension
Equivalence Principle
Speed of Light in a Bend
Photon Mass Again
Space Constituents
Light and Black Holes
M-> E Conversion
Gravity Basics
Material Speed Limits
Ontology
Asymmetrical Twins
Relative Views
Twin Gravity
Buying the Einstein Theory of Time?
Lorentz Transform
Light Mass
Why Does an Electron Have Spin 1/2 ?
Electrons and Speed of Light?
Speed of Gravity
Basics
Relativity
Relativistic Points of View
Inertia
Inertia
Variable Pi?
Conservation of Energy: "law" or "theory"
Relativity and Light
E=mc^2
Building Blocks of Space
Equivalence Principle
Vacuum Zero-point Fluctuations
E=mc^2
Relativity and Orbits
Photon Mass
Gravity and Expansion
Time and Space
Black Holes Filling In?
Saying Hello Really Fast
What is a Dimension?
Faster Than the Speed of Light
The Ultimate Speed Limit
Faster Than the Speed of Light? How do we Know?
Fast as Light
Light Speed
Speed of Gravity
Massless Particles Traveling at the Speed of Light
Car Traveling at the Speed of Light?
Reaching the Speed of Light?
Gravitational Lensing in 3D
Special Relativity
Metaphysics
Gravity, Acceleration, and Time Dilation
Speed of Time
Twin Paradox and Slow Clocks in Fast Reference Frames
Energy Into Matter
Matter and Energy
Twin Paradox
Gravity and Energy
Mass and Speed
Absolute Acceleration?
Mass, Spacetime, and Gravitons
Speed Limit
Gravity, Matter, and Curved Spoaetime
Fast Photons
Black Holes Merging
Relativity and Aging
Shape of Universe
Doppler-shifted Force Carriers
Cherenkov Radiation Speed
E=mc^2 and Conservation
Leaving Quickly
Relativistic Merry-go-round
Fast Moving
Relative Speed
Photons not Accelerating
E=mc^2
Speed Limit
Cosmic Questions
Twin Paradox and General Relativity
E=mc^2
Speed Limit
Speed Limit
Dispersing Black Holes?
Light Bending
Qu'est ce qui Défini un Systeme de Référence?
Feeling Gravity
Light’s Weight
Shuttling Off
Twin Times
No Rigid Rods
Relativity and Such
Time Travel?
Relativity Revisited
Relativity Fundamentals
Speed of Time?
Accelerating Past C?
(F)light and Time
Accelerating Near C
Cosmic Tachyons?
Relative Time
Spinning Faster Than C?
Gravitational Grooves?
Infinite Mass-energy?
Pie in the Sky
Gravity and Speed
Photon Gravity
Matter and Particle Questions
Electron Beam In
Using E=mc^2
Dot Going Faster Than C
Heavy Light
Black Hole Energy
How Does Relativity Work?
Matter and Energy
How Does Light Have Momentum Without Mass?
Quantum Frequencies: Photons, Gravitons, Etc.
Why Relativity?
Not Quite Relativity
Black Hole Gravity
Why Constant Speed of Light
Special Relativity at More Than C
General Relativity: too Hard for Us
Leaving This Existence
Moving Universe?
EPR Timing
Seeing the Invisible?
H Emission Spectrum
Twins and Cosmos
Relative Speed
Incompressible Rods
E=mc^2